Rohit Gupta published a new build, the OpenBadge The major elements on the PCB were: – LED Matrix – A MSP430G2553 microcontroller brain – A ULN2803 Darlington Driver to sink the current – A USB connector to charge the battery – A SBW connector to program the MSP430 – A Switch to change the message – A […]
Jaanus made this infrared LED matrix project: I have lately been doing bunch of different LED matrices. One of the most interesting one is an infrared matrix, made out of old Soviet infrared light that was used for data transmission (if I remember correctly – in studios). We repurposed it to LED screen that is visible […]
An open-source cascadable 8×8 LED matrix module using Arduino and MAX7219 from Embedded Lab: Easy Matrix is a cascadable 8×8 LED matrix module with the MAX7219 chip on board, which allows to control the display with only 3 I/O pins from microcontroller. Multiple Easy Matrix modules can be easily cascaded to make a bigger-size display through […]
IR remote controlled light appliance application for the 32×32 RGB LED Matrix by Craig Lindley, that is available at Github: My latest creation, the Light Appliance. This device displays various graphical routines (plasmas, fractals, etc.), animated GIFs, displays time, date and temperature, can be an open or closed sign for a business and a mood […]
Ray Wang writes about his recently completed project, the SquareWear Mini with All-New Chainable Color LED Matrix, and an Interactive Animation Design Tool. The goal is to make standalone programmable color display gadgets. The LED matrix is chainable and can be seamlessly extended in both X and Y directions. The SquareWear Mini is essentially an […]
Old Display Reverse Engineered to work with a Raspberry Pi: Dimitri, Frank, Kevin and Robin from Eectronique have sent in some details of a project that they have been working on. They had an old early 90′s LED matrix sign and wanted to make it work with a Raspberry Pi. The circuit layout is what […]
Nickjohnson posted his minimatrix project in the forum. It’s AVR powered 8×8 LED matrix, with an IR sensor for communication. It has just 8 parts in its BoM: A one-color 3cm LED matrix, an ATTiny2313/4313 to power and drive it, an 8-way resistor network, a battery holder, and two decoupling capacitors. Finally, it has a […]
tuitwall is a project that will allow you to show Tweets in a LED matrix. It’s based on an Arduino, an ethernet shield, a LED matrix that has its controller, a Holtek HT1632C and a PHP backend that interfaces with Twitter. Its designer Santiago Reig explains: “The webpage, written in PHP, allows a user to […]
Exapod built a 8×16 ping-pong ball LED matrix display. The ping-pong balls are used as diffusers for green LEDs. Two MAX7219 8bit serial LED drivers control the lights. A PIC18F2553 drives the MAX chips with text received over a Bluetooth module. I finally finished my 8×16 ping pong ball matrix display, soldering all the boards, […]
Gagandeep built a “bad driver” feedback display. It’s a huge 40X16 LED matrix spanning ~80cm in width, and it’s designed to be placed on the rear windshield of a car. The spacing of 2cm between LEDs is enough to ensure that the driver doesn’t have an obstructed rear view. Using 2 74HC595 8bit serial in […]
Here is a video from Hive 13 that shows how an Android tablet is used to control a glass block LED matrix via a wireless connection. After installing a LED matrix behind a glass block wall in their bathroom, hackers at Hive 13 are figuring out a way to control them. After some initial struggles […]
Bertho entered his Lights out game into the Open 7400 Logic Competition. After working out the math behind lights out, Bertho decided to make his own using only logic chips. The object of the game is to turn the lights off by using a + shaped mask.The board automatically generates random patterns over a 5×5 […]
Markus Gritsch posted his MSP430 LED Matrix toy in the project log forum: I just did a quick little project using an MSP430 and two 595 shift registers to drive a small LED matrix display, suitable for beginners. Two push buttons are used as inputs and a buzzer is connected to a timer output to […]
Hack a Day made a Jack-o-lantern that shows animations on a LED matrix. Mike shows you how to design and run a multiplexed display with an AVR. Then he guts a pumpkin and installs 70 LEDs with power tools. Gourds, LEDs, and power tools, what’s not to love? We’re big fans of blinken-pumpkins.
Joby Taffey has a demo of an SPI-based Sparkfun LED Matrix using the Bus Pirate. You can get a Bus Pirate for $30, including worldwide shipping at Seeed Studio. Adafruit also has the Bus Pirate and probe cables in stock and ready to ship.